Hitler and Eva's bodies were BURNED outside the bunker. It was a botched job. The Soviets found them and them spend months moving them around. Burying and reburying them until they kinda lost track. When their research verified the last spot, the East Germans had built the garbage dump there (now paved to boot). The only thing they took back to Moscow was part of his skull which was found in the bunker. History Channel had a great show about all this.

When you combine the Nazis and the Soviets you approach a perfect storm of secrecy.

Records documenting the actions of the Soviet Third Army confirm the East German garbage dump as the final burial spot.

However...

The Russians revealed in 2000 that in 1970, the remains of Hitler and Eva Braun were exhumed, burned again and disposed of by dumping in the Elbe river.